The effects of using different ball clays on the physical properties
of the standard body have been shown. Although variations in all of the
physical properties can be attributed to the use of different ball clays,
these variations are more pronounced on the conpressive strength properties.
Since feldspar mainly controls fired shrinkage and fired absorption, and
since the same amount of feldspar was used in each body, the effects of
using different ball clays on these physical properties were not so pronounced.